Graco LubePro 24Y498, Instructions Manual

Page: 12 / 32

Operation
12 3A3169E
Lubrication System Sizing and Calculation Guidelines
Table 1: Lubricant Output and Pressure - US
NOTE: The lubricant output per pump stroke must be less than the amount of lubricant discharged per pump stroke.
Table 2: Lubricant Output and Pressure - Metric
1. Total Injector Volume to Dispense and Charge
a. Add together the total number of injectors in the sys-
tem.
b. From Table 1 or Table 2 above, find your Injector Type
in the first column and the related Injector Volume to
Charge in the third column. Multiply this value by the
total number of injectors determined in Step a
(above).
2. Calculate the volume of lubricant in the Pipeline (G):
a. Use the pipe’s inside diameter (ID) measurement to
calculate the area of the pipe.
b. Measure the length of the pipe (G) only. Do not
include the feeder lines (S) in this calculation.
c. Multiply the area of the pipe (calculated in Step a) by
the length of the pipe (measured in Step b).
3. Calculate line expansion and fluid compression in the pipe
using the 10% Rule.
a. Multiply the volume calculated in Step 2 by 10%.
4. Calculate the Total System Volume required.
a. Add together the total from Step 1 and Step 3 ONLY.
Do NOT include Step 2.
b. The Total System Volume required must be less than
the Pump Lubricant Output / Stroke provided in the
fourth column of Table 1 or Table 2.
c. If the Total System Volume required is greater than
the Pump Lubricant Output / Stroke provided in the
fourth column of Table 1 or Table 2, split the system
into two or more systems.
1 2 3 4 5 6 7
Injector
Type
Max
Injector
Output
cu. in.
Injector
Volume to
Dispense
and Charge
cu. in.
Max Pump
Lubricant
Output /
Stroke
cu. in.
Maximum Pressure
Minimum
Pressure
Recommended Pressure
Output PSI
Required Air
PSI Output PSI
Required
Air PSI Output PSI
Required Air
PSI
GL-43 0.008 0.016
3.0 1000 53 750 39 850 45
GL42 0.003 0.006
1 2 3 4 5 6 7
Injector
Type
Max
Injector
Output
cc
Injector
Volume to
Dispense
and Charge
cc
Max Pump
Lubricant
Output /
Stroke
cc
Maximum Pressure
Minimum
Pressure
Recommended Pressure
Output
MPA (bar)
Required Air
MPA (bar)
Output
MPA (bar)
Required Air
MPA (bar)
Output
MPA (bar)
Required Air
MPA (bar)
GL-43 0.131 0.262
49.1 6.9 (68.9) 0.36 (3.6) 5.2 (51.7) 0.26 (2.7) 5.9 (58.6) 0.31 (3.1)
GL42 0.049 0.098